Question about Mobile Pixels Duex Max

No, not in my opinion on this model. This model unfolds and fits onto the back of the laptop (magnetised). This already takes up 3/4 of the surface area of the back of the laptop screen. The weight would also be too great.
I hope I've been able to help you.

Ciao Géraldine ... There are several possibilities ... just search with EXTENSION DISPLAY NOTEBOOK

Teamgee Portable Monitor for Laptop, 12" Full HD 1080p IPS Display, Dual Triple Monitor Screen Exte

(x50) 13.3 Triple Laptop Screen Extender 1080p ips hdr falten